Inventor
Stefan Ehrenberg
Inventor
Frankfurt am Main, DE
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Bprimary
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments60%
D06PDyeing or printing textiles16%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%
C07DHeterocyclic compounds8%
A01KAnimal husbandry4%
PatentTitleYear
7,468,081'Mono-, di-or trichromatic dyeing or printing of natural or synthetic polyamide fiber materials'20087,414,129'Reactive triphendioxazine dyes, methods for the production thereof, and use thereof'20087,381,228'Mono-, Di- or Trichromatic Dyeing or Printing of Natural or Synthetic Polyamide Fiber Materials'20087,129,336'Reactive azo dyes, their preparation and their use'20067,109,313'Water-soluble reactive mono- and di-azo dyes'20066,809,187'Metal complex dyes based on Bucherer naphthols'20046,444,794'Water-soluble fiber-reactive dyes preparation thereof and use thereof'20026,358,287'Mixtures of fiber-reactive dyes, preparation thereof and use thereof for dyeing fiber materials'20026,124,441'Monoaso compounds containing a fluoro-triazinyl group linked with a fiber-reactive group of the vinyl sulfone series via an ethyl-n-methyly-amino group, suitable as dyestuffs'20006,060,591'Water-soluble fiber-reactive dyes, processes for their preparation, and their use'20006,046,311'Water-soluble fiber-reactive dyes, preparation thereof and use thereof'20005,880,282'Triphendioxazine reactive dyestuff'19995,834,601'Water-soluble fiber-reactive dyes, process for their preparation, and their use'19985,712,394'Process for preparing 2,4,6-trichloropyrimidine'19985,502,174'Reactive dyestuffs based on a substituted barbituric acid'19965,460,631'Bifunctional reactive dyestuff mixture'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995–1999Patents assigned to BAYER AG (4)· patent assignee history
1995–1999Based in Koln, DE· patent location history
1996Based in Cologne, DE· patent location history
1998–2008Patents assigned to DYSTAR TEXTILFARBEN GMBH & CO (11)· patent assignee history
1998–2004Based in Frankfurt am Main, DE· patent location history
2004Patents assigned to DYSTAR TEXTILFARBEN GMBH & CO. (1)· patent assignee history
2006–2008Based in Hattersheim, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DYSTAR TEXTILFARBEN GMBH & CO | 11 | 1998–2008 |
| BAYER AG | 4 | 1995–1999 |
| DYSTAR TEXTILFARBEN GMBH & CO. | 1 | 2004 |
Locations
| Location | Patents | Span |
|---|---|---|
| Frankfurt am Main, DE | 8 | 1998–2004 |
| Hattersheim, DE | 5 | 2006–2008 |
| Koln, DE | 2 | 1995–1999 |
| Cologne, DE | 1 | 1996 |